11. History shows that, in certain epochs, the life of faith is sustained by the forms and practices of piety, which the faithful have often felt more deeply and actively than the liturgical celebrations. Indeed, "every liturgical celebration, because it is an action of Christ the Priest and of his Body, which is the Church, it is a sacred action surpassing all others. No other action of the Church can equal its efficacy by the same title or to the same degree." Hence, the ambivalence that the Liturgy is not "popular" must be overcame. The liturgical renewal of the Council set out to promote the participation of the people in the celebration of the Liturgy, at certain times and places (through hymns, active participation, and lay ministries), which had previously given rise to forms of prayer alternative to, or substitutive of, the liturgical action itself.

The faithful should be made conscious of the preeminence of the Liturgy over any other possible form of legitimate Christian prayer. While sacramental actions are necessary to life in Christ, the various forms of popular piety are properly optional. Such is clearly proven by the Church's precept which obliges attendance at Sunday Mass. No such obligation, however, has obtained with regard to pious exercises, notwithstanding their worthiness or their widespread diffusion. Such, however, may be assumed as obligations by a community or by individual members of the faithful.

The foregoing requires that the formation of priests and of the faithful give preeminence to liturgical prayer and to the liturgical year over any other form of devotion. However, this necessary preeminence is not to be interpreted in exclusive terms, nor in terms of opposition or marginalization.